000			00350nam a2200133Ia 4500
008			190710s9999 xx 000 0 und d
020			_a93-83746-002
082			_a304.28 S63
100			_aSingh, J S
245		0	_aEcology environmental science and conservation
260			_aNew Delhi _bS Chand and Company _c2015
300			_axiv,929
942			_cBK
999			_c31815 _d31815